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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 124 · 40 questions
TalentJR

The method (Start value is 100%): New value after a rise of p%: value + p% of value. After a fall: value − p% of value. Percent change = change ÷ starting value × 100. Two changes a% and b% one after the other: a + b + (a × b) ÷ 100, with a fall counted as minus.

NameDateTime takenScore ___ / 40
  1. 1.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  2. 2.A shop sells 4300 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  3. 3.The price of a school bag changes from ₹3380 to ₹2366. By what percent did it come down?
  4. 4.A water tank holds 560 litres. 50% of the water is used. How many litres are left?
  5. 5.The price of a school bag changes from ₹2720 to ₹3400. By what percent did it go up?
  6. 6.A water tank holds 800 litres. 50% of the water is used. How many litres are left?
  7. 7.A water tank holds 4960 litres. 40% of the water is used. How many litres are left?
  8. 8.The price of a school bag changes from ₹3260 to ₹2934. By what percent did it come down?
  9. 9.The price of a bicycle is ₹1320. It goes up by 30%. What is the new price (in ₹)?
  10. 10.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  11. 11.The price of a school bag changes from ₹3700 to ₹5550. By what percent did it go up?
  12. 12.A town has 980 people. Its population grows by 50%. How many people live there now?
  13. 13.A price comes down by 20% and then comes down by 20% more. By what percent has it come down in all? =
  14. 14.A water tank holds 3160 litres. 10% of the water is used. How many litres are left?
  15. 15.A shop sells 1620 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  16. 16.The price of a school bag changes from ₹4040 to ₹2424. By what percent did it come down?
  17. 17.A water tank holds 600 litres. 10% of the water is used. How many litres are left?
  18. 18.The price of a school bag changes from ₹280 to ₹336. By what percent did it go up?
  19. 19.A town has 4080 people. Its population grows by 50%. How many people live there now?
  20. 20.A price goes up by 30% and then goes up by 25% more. By what percent has it gone up in all? =
  21. 21.The price of a bicycle is ₹1240. It goes up by 20%. What is the new price (in ₹)?
  22. 22.A water tank holds 3840 litres. 5% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹4180 to ₹3971. By what percent did it come down?
  24. 24.A water tank holds 2980 litres. 40% of the water is used. How many litres are left?
  25. 25.The price of a bicycle is ₹4280. It goes up by 25%. What is the new price (in ₹)?
  26. 26.The price of a school bag changes from ₹4880 to ₹3660. By what percent did it come down?
  27. 27.The price of a bicycle is ₹2960. It goes up by 15%. What is the new price (in ₹)?
  28. 28.The price of a bicycle is ₹1900. It goes up by 40%. What is the new price (in ₹)?
  29. 29.A water tank holds 1220 litres. 40% of the water is used. How many litres are left?
  30. 30.The price of a school bag changes from ₹1120 to ₹784. By what percent did it come down?
  31. 31.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  32. 32.The price of a school bag changes from ₹3120 to ₹1872. By what percent did it come down?
  33. 33.The price of a bicycle is ₹1160. It goes up by 50%. What is the new price (in ₹)?
  34. 34.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
  35. 35.A price comes down by 20% and then comes down by 5% more. By what percent has it come down in all? =
  36. 36.A price goes up by 30% and then goes up by 20% more. By what percent has it gone up in all? =
  37. 37.The price of a bicycle is ₹2220. It goes up by 10%. What is the new price (in ₹)?
  38. 38.A water tank holds 2780 litres. 20% of the water is used. How many litres are left?
  39. 39.A price comes down by 30% and then comes down by 30% more. By what percent has it come down in all? =
  40. 40.The price of a school bag changes from ₹120 to ₹144. By what percent did it go up?

Answer key

  1. 43
  2. 4730
  3. 30
  4. 280
  5. 25
  6. 400
  7. 2976
  8. 10
  9. 1716
  10. 33.5
  11. 50
  12. 1470
  13. 36
  14. 2844
  15. 2106
  16. 40
  17. 540
  18. 20
  19. 6120
  20. 62.5
  21. 1488
  22. 3648
  23. 5
  24. 1788
  25. 5350
  26. 25
  27. 3404
  28. 2660
  29. 732
  30. 30
  31. 26
  32. 40
  33. 1740
  34. 72.5
  35. 24
  36. 56
  37. 2442
  38. 2224
  39. 51
  40. 20

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